The issue is many people miss the point when they say "rangers wouldn't casts loud spells. That would reveal their location."
Ranger is the Tracker class.
The ranger is several yards away when tailing someone. Far enough away that if they cast spells, it is lost in the nose of the wild. And they have spells like speak with animals, speak with plants, beast sense, etc, etc. And older edition rangers had spells that made tracks glow or reappear, move underground, glide, vineswing, and teleport through trees.
That's the point. Rangers aren't supposed to need to be close by to follow you. So they can cast all the spells they want.